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(No Model.)

0. L. REDFIELD, TYPE DIE FOR MATRIX MAKING MACHINES.

No. 454,066. Patented June 16,1891.

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UNITED STATES PATENT OFFICE.

CASPER L. REDFIELD, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CHICAGO MATRIX MACHINE COMPANY.

TYPE-DIE FOR MATRIX-MAKING MACHINES.

SPECIFICATION forming part of Letters Patent No. 454,066, dated June 16, 1891. Application filed April 1 1889. Serial No. 305,569. (No model.)

To all whom it may concern: stem and having its lower portion beveled, as Be it known that I, CASPER L. REDFIELD, a shown at 7. The type-face is on the end of citizen of the United States, residing at Mina smaller projecting central part 8, that is neapolis, in the county of Hennepin and inside the line of the bevel, as indicated by 5 State of Minnesota, have invented certain the dotted line a, Fig. 1. The guide-hole 3, new and useful Improvements in Type-Dies which may be circular or of other suitable for Matrix-Making Machines; and I do hercshape to correspond with the die-head, has by declare that the following is a full, clear, inclined sides at its upper portion parallel to and exact description of the same, reference the bevel 7 on the die-head, so that when the IO being had to the accompanying drawings. die is depressed and is not central to the hole My invention relates to type-dies and the its beveled sides will slide on the inclined surmeans for removably supporting them in mafaces of the guide-hole and be guided toward trix-making machines in which the dies are the center of the aperture, which corresponds carried in a frame adapted to present them in size and shape with the die-head, so that I 5 successively to an impression device. the die will be guided to make the impres- The objects of the invention are, first, to sion at the proper point in the matrix-body. support the dies by means that render them The die is guided to prevent it from turneasy of removal, and, second, to produce a ing by a pin 9, sliding in a hole 10 in the form of die-heads and holes in the guidelower carrier-plate 2. The upper portion 11 7o 20 plate that will insure the guiding of the dies of the die-stem 5 is reduced in diameter and to the exact points desired on the matrixthreaded, and the portion 12 above the threadbody even when, by reason of looseness in ed portion is still farther reduced in size. the die-carrying devices, the dies are not pr'e- On the threaded portion 11 is screwed the sented centrally to the holes. In using dies lower end of a tubular cap-piece 13, which 25 of ordinary construction in connection with slides in a hole in the upper plate 1 of the theusual guide-plate a slight looseness in the carrier, and the narrower portion 12 of the parts of the die-carrier or the substitution of die-stem fills an opening 14 in the upper pora die-carrier of slightly-different size or artion of the tubular piece 13. A spring 15, rangement for another is liable to cause the seated upon the lower plate of the carrier, 3o face of the dies to strike the plate at the side bears against a flange 16 on the cap-piece, of the guide-hole and injure-the dies. Such holding the die in the position shown in Fig. objectionable results are avoided by the use 1. To remove the die it is only necessary to of the improved forms of dies and guides unscrew the tubular cap-piece 13 by turning illustrated in the accompanying drawings, in it on the die-stem and drawing the die out 5 whichdownward, leaving the cap-piece and spring Figure 1 shows an elevation of a die and a in place, as shown in Fig. 2. portion of the carrying-frame and guide-plate In Fig. 3 the cap-piece 13 is screwed on the in vertical section. Fig. 2 shows the die-supthreaded portion of the die-stem, as described porting devices after the removal of the die. relative to Fig. 1, the only difference in con- 0 Figs. 3 and 4 show in elevation modified construction being that the die-head 6 is of structions of the die supporting and guiding smaller diameter and has a lateral lug17, devices. that carries the guide-pin 9.

In said drawings, 1 and 2 designate, re- I11 Fig.4a straight stem 5, carryingaheail spectively, the upper and lower plates of a similar to that described, and a guide-pin 9 5 die-carrying frame, which may be operated in are supported by means of a spring 15, the any suitable manner to present the dies suclower end of which rests upon the lower carcessively over a guide-ho1e 3 in a fixed plate i'ienplate, and the upper end is attached at i. The die-stem 5 is entered from below 18 to the die-stem. By freeing the spring through a hole in the lower plate 2 of the diefrom its point of attachment the die may be too 50 carrier, and has at its lower end beneath said drawn out downward.

plate a head 6, considerably larger than the What I claim is 1. A type-die having its end beveled, in

, cnnbination with a device providing a guiding-aperturc therefor having a flaring mouth, and a guiding device attached to the die to prevent it from turning.

2. A die-carrier adapted to present without impressing a die at the printing-point and a sliding type-die therein having a beveled end, in combination with an unyielding device providiug a countersunk guiding-aperture at the printing-point for centering the die.

3. A die-carrier adapted to present without impressing a die at the printing-point and to guide it to prevent it from turning and a sliding type-die therein having a beveled end, in combination with an unyielding device providing a countersunk guidingaperture at the printing-point for centering the die.

4. The combination, with a centering device having a countersunk guide-hole, of a type-die fitting therein at all sides and having its end beveled and its type-face on a projecting portion within thelines of said bevel, substantially as set forth.

5. In combination, a typefdie having the sides of its head portion parallel and the end adjacent the face tapering, adevice providing a centering-aperture having its sides correspending in size and shape to the die-head and having a flaring mouth adapted to guide the die to the center, anda die-carrier adapted to present the die at said aperture without causing it to enter.

6. A type-die having a beveled end, a stem for holding and guiding it, a guide-pin to prevent its turning, a carrier therefor, and adevice providing a countersunk aperture at the printing-point for centering the die.

7. A die-carrier, a type-die composed of a stem guided in the earrrier, an enlarged head without the carrier, having a beveled end, a projecting portion within the lines of the bevel for the type-face, aspring for supporting the die, and a pin for guiding it, substantially as set forth.

8. The combination, with a plate having a countersunk centering-aperture at the printing-point, and a die-carrier adapted to present dies in succession opposite said aperture, of type-dies having spring-supported stems guided in the carrier, heads having their outer edges beveled and their type-faces on projections within the lines of thebevel, and guidepins sliding in the carrier, substantially as set forth.

9. The combination, with adie-carrier composed of parallel plates, of type-dies having stems guided in one of the plates, cap-pieces guided in the other plate and having flanges at the inner side thereof, springs bearing against said flanges and the opposite plate, and guide-pins carried by the dies and engaging one of the plates, substantially as set forth.

10. The combination, with a die-carrying frame composed of opposite plates, 0t typedies consisting of main stems having enlarged heads outside one of the plates and carrying guide-pins that slide through the plate, cappieces screwing on the opposite ends of the stems andhaving flanges engaging the under side of the adjacent plate, and springs for supporting the dies, substantially as set forth.

. CASPER L. REDFIELD. Witnesses:

P. II. GUNCKEL, E. M. SCIIUMANN. 

